Calendar clock



June 9, 1942. A. P. NEYHART 2,286,000

CALENDAR CLOCK Filed Nov. 1, 1940 4 Sheets-Sheet 1 $71 05 P NEVHAPT INVENTOR.

June 9, 1942. A P, NEYHART 2,286,000

CALENDAR CLOCK Filed Nov. 1, 1940 4 Sheets-Sheet 2 ART/1M? A EVHAIPT INVENTOR.

v MMM A. P. NEYHART CALENDAR cLoqK June 9, 1942 4 Sheets-Sheet Filed NOV. 1, 1940 INVENTOR.

ARTHUR NEW/ART BY A. P. NEYHART CALENDAR CLOCK June 9, 1942.

Filed Nov. 1, 1940 4 Sheets-Sheet 4 ARTHUR P Nb HART INVENTOR.

Patented June 9, 1942 f near o stares FATENT OFFICE CALENDAR CLOCK Arthur P. Neyhart, Los Angeles, Calif., assignor to Warren Telechron Company, a corporation of Maine 15 Claims.

This invention relates to calendar clocks of the general character of clocks disclosed in Letters Patent of the United States, No. 2,056,905, granted to me on the 6th day of October, 1936, and an object of the present invention is to provide certain important improvements over the mechanism shown in said patent, as hereinafter described.

A particular object is to provide in combination with a suitable timing mechanism-preferably an electrically operated clock mechanismprovided with a stationary dial, a plurality of indicators preferably formed of generally circular coaxial discs for indicating, respectively, the months of a year, the days of the week and the days of a month, together with automatic operating means connected with said timing mechanism and with said indicators whereby once in each twenty-four hours one or more of the indicators may be moved for changing the indicated date from day to day.

An object, also, is to form the indicators, or at least the month and the day-of-the-month indicators, with a generally circular series of segments, all of which are inclined outwardly in a common direction and are separated by alternating recesses, or notches, corresponding in number, respectively, to the number of months in a year and the maximum number of days in a month, certain of said segments on each of said indicators being of different extent than the other segments on the same disc, the differences between the segments being determined by the number of twentyfour hour periods between the last day of one month and the first day of a succeeding month. The segments of the indicators may be externally or internally formed on the indicators and are adapted to be engaged by a suitable actuating means which is automatically selective for the purpose of adapting the mechanism to all date chan ing operations over an extended period of time, except in leap years.

Other objects are to provide suitable means for moving the day-of-the-week indicator simultaneously with the other indicators, either by similar or difierent means; to arrange the indicaters relative to the dial so that the month, dayof-the-month and day-of-the-week will be visible on or through the dial at the completion of and after each date changing operation; to provide means for manually setting the indicators to a desired date, as for instance when the clock is installed for use or when for any reason it may have been stopped in operation; and to provide a stop device for limiting the stroke of the actuating means at each operation thereof. Still other objects may appear as the description of my mechanism progresses.

I have shown a preferred embodiment of my invention in the accompanying drawings, subject to modification, within the scope of the appended claims, without departing from the spirit of the invention.

In said drawings:

Fig. 1 is a front elevation of a calendar clock embodying my improvements;

Fig. 2 is a face view of the day-of-the-week indicator;

Fig. 3 is a face view of the month indicator;

Fig. 4 is a face view of the day-of-the-month indicator;

Fig. 5 is a sectional elevation of the assembled mechanism on line 55 of Fig. 15;

Fig. 6 is an enlarged elevational view of indicator supporting means and the operating mechanism with actuators set in readiness for an ensuing date changing operation;

Fig. 7 is a view of the structure shown in Fig. 6 with the actuating means positioned as at the completion of a date changing operation;

Fig. 8 is a fragmentary enlarged face View of the indicators when positioned in readiness for a date change from July 31st to August 1st, the actuator having been previously moved into date changing position;

Fig. 9 is a view similar to Fig. 8 except that the indicators are shown in proper positions after the date change has been completed;

Fig. 10 is a fragmentary view of theindicators in position for a change from February 28th to March 1st; I

Fig. 11 is a view of the same at the completion of the change from February to March;

Fig. 12 is a sectional view of the mechanism on line l2-l2 of Fig. 6;

Fig. 13 is a view of the indicators in position for a date change from November 30th to December 1st; v

Fig. 14 is a View of the same at the completion of the change from November to December and Fig. 15 is a sectional elevation of the timing mechanism and the calendar mechanism on line l5l5ofFig.7 v V v Fig. 16 is a perspective View of the portions of actuator parts. I V V, I

Briefly described, the mechanism shown in the drawings includes a timing mechanism generally indicated at A and a calendarmechanism generally indicated atB, together with certain old and well known devices in common use in connection with electrically operated clocks and certain new devices of my invention adapted to be embodied in a standard electric clock for indicating the month, day of the month and day of the week as well as the hours and minutes of a day.

The timing mechanism A is usually provided with a pair of spaced plates l and 2 between and on which the operating mechanism is mounted and said operating mechanism includes a motor (not shown), a worm 3 operated by said motor, a gear 4 operated by said worm for driving a shaft 5, gears B and 1 connecting shaft 5 with a countershaft 8, gears 9 and I6 connecting shaft 8 with a hollow shaft H coaxial with and embracing a part of shaft 5, and hour and minute hands l2 and 13, respectively on the outer ends of shafts 5 and I i, so that said hands may freely move over a fixed dial I4 which is spaced substantially forwardly of and supported on plate 2, as by means of spacers l5.

Inasmuch as the hour hand shaft ll makes one rotation in each twelve hour period I provide a gear l5 thereon in front of plate 2 which meshes with and drives a larger gear I! held on a shaft [8 suitably journaled to the front of plate 2, the ratio between gears l6 and i! being two to one so that shaft l8 will make one complete revolution in each period of twentyfour hours, thereby insuring a date change once in each period at exactly the same time (midnight) each day, as hereinafter described. At 16a I have shown a collar on shaft ll representing means to assist in preventing axial displacement.

Intermediate dial i4 and plate 2 I provide a set of generally circular washer shaped indicators C, D and E coaxially mounted relative to the shafts 5 and II and of approximately the same diameter, said indicators, respectively, be ing arranged for indicating the days of the month, the months and the days of the week, in the order named.

Indicators C, D and E have central openings adapted to rotatably fit a supporting sleeve l9 which is provided with a flange 20 adapted to be secured to plate 2 as by means of suitable spacers 2|, as shown in Fig. 15. Spacers 22 of arc form are provided between adjacent indicators and have inwardly projecting portions 23 at their ends as best shown in Fig. 6 adapted to hook over shoulders provided in and at opposite sides of openings 24 and 25 formed in the sleeve 19, for holding the spacers stationary, the indicators C and D, at least, having depressed portions as at 26 for receiving said spacers, so as to economize space as far as possible. (See Figs. 6, 7 and 15.)

It will be noted that the day-ofthe-week indicator E, as shown in Fig. 2, has the abbreviated names of the days of the week on the face thereof arranged in sequence in a clockwise direction and formed at points toward the axis from T shaped apertures 21, and said apertures are so formed and of such size that the month and day of the month designations on indicators 0 and D may be visible therethrough as well as through an aperture 23 at the bottom of dial l4 at the 6 position thereon. Aperture 28 is of such form and size that the month, day of the month and day of the week designations may be observed therethrough at all times.

Month indicator D has the names of the months in a year or suitable abbreviations thereof arranged in order on the face thereof, as shown in Fig. 3, and apertures 29 therein outwardly of said designations of such form and size as render the day of the month designations on indicator C visible therethrough. Indicator C has numerals designating the days of the month arranged in order on the face thereof in such positions as to register with the apertures 29 on indicator D.

I have shown indicators C and D, at least, formed with annularly arranged outwardly inclined segments and recesses alternating with said segments, thereby providing, in effect a ratchet wheel of each indicator adapted to be engaged by a pawl for moving the indicators relatively and together as may be necessary in order to make requisite date changes. In the form of indicators shown the segments and recesses are formed on the peripheries of the discs and the number of segments and recesses on the indicators, respectively, correspond to the maximum number of days in the month (31) and the number of months in a year (12).

On the day-of-the-month indicator C the great majority of the segments 30, etc. are of uniform size and spacing as well as inclination as designated by the numerals corresponding to certain days of the month thereto adjacent, the extent of each of said segments 30 being substantially eleven degrees between corresponding extremities of the segments. The remaining segments 3|, 32, 33, 34 and 35 (see Fig. 4) are of 12 12 14, 24 and 5 degrees extent, respectively, for purposes hereinafter explained. Notches 36 of uniform size are provided between all of the segments, except that the notch 36 between segments 34 and 35 is substantially longer than the other notches. It may be noted that in Figs. 1, 2, 3 and 4, the indicators and dial are shown in the proper positions for indicating the date of Tuesday, February 28, the position of indica tion being marked on the drawing by means of a line and arrow 3?. Thus, the designation TUE on indicator E, the designation FEB on indicator D and 28 on indicator C are in registration with the line 31 for the purpose of describing the relationship between the different indicators and the segments thereon in date changing operations.

It will be observed that the segments on indicator C beginning with the segment next following the 31st day designation in clockwise order are progressively longer up to and including the segment 34 so that under certain conditions certain of the recesses between the segments on the month indicator will be underlaid by certain segments of the day-of-the-month indicator C, as hereinafter explained in greater detail.

Certain segments 38 of the month indicator D are of the same size and form (8 degrees in extent) and certain adjacent recesses 39 alternating with said segments are likewise of the same extent (20 degrees) while other segments 49, 4|, 42, 43, 44 and 45 are of different extent (31 6%, 16, l6, l6, 16 degrees). The recesses between certain segments which are designated at 46 are of 14 degrees extent and those designated at 4? and 42 are, respectively, of 12 and 21%; degrees extent. The extent and form of the segments and recesses on indicator D are such that certain of said segments will overlie certain of the notches in the indicator C for the purpose of regulating the effectiveness of the operating mechanism for moving the indicators in a date changing operation.

The calendar operating mechanism includes a cam 50, as shown in Figs. 6, 7 and 12 which is fixed to shaft l8 and is thus adapted to make one complete revolution in each twenty-four hours in a counterclockwise direction. Said cam has'a substantially long concentric dwell which is operative while the indicators are at rest, an abrupt decline 52 which is operative for setting the actuating means for an ensuing date chang ing operation, a momentary dwell 5'3 and an inclined segment 54 operative for effecting the movement of the indicators and thus changing the indicated date.

Cam 50 is engaged by a follower 55 which is pivoted at a point 55 to a primary actuator 51 rotatable for a fraction of a revolution on shaft ll. Follower 55 has a slotted end portion 58 adapted to straddle the shaft N3 of gear ll so as to be "guided in its movement, and a pin or roller 59 is carried by the follower so as to overlie and engage the periphery of the cam for effect ing the movement of the actuator 51. Said actuator is tensioned for the purpose of holding the follower on the cam and for retracting the actuator by means of a tension spring '60 which may have one of its extremities fixed to pivot pin 56 and its other extremity to sleeve [9.

A secondary or auxiliary actuator BI is also ro'- tatably held on shaft ll adjacent actuator 5'! and includes a long arm E32 projecting outwardly to a point beyond the peripheries of the indicators C, D and E and thus supports a pawl 63 which is preferably in the form of a pin adapted to overlie and traverse the se ments of indicators C and D. Said pawl is held on a short arm E which is pivoted at 65 to arm 52 and is tensioned by means of a suitable spring 56. is tensioned by means of a spring 3'! so that said spring will urge the actuator in a clockwise direction as seen in Fig. 7 for moving the actuator 62 and pawl into position for an ensuing date changing operation.

Actuator til is controlled, however, by actuator 51, the hub of actuator 5? having a protruding shoulder or lug t3 which is engageable with the adjacent edge of actuator 62 for the purpose of applying power from cam 58 to actuator 62 in a counterclockwise direction as viewed in Figs. 6 and '7 in order to move the indicators in a date changing operation. In Fig. 12 the upper half of the hub of actuator E l is cut away for illustration purposes. In Fig. 6, I have shown the operating mechanism with the several elements thereof in the relative positions they assume at a time just following the traverse by the follower pin or roller 59 of the declining segment 52 of the cam and the movement of the secondary actuator 62 into position for effecting only a one day movement of the day-of-the-n1onth indicator C with the pawl 63 engaging the notch between two ad jacent mid -month day segments as at 35, and in such positions, the follower pin 59 is resting upon the momentary dwell of cam 50.

In Fig. '7, I have shown the elements of the operating mechanism positioned as at the end of an operation with the pawl 53 engaging a stop 09 which is suitably afiixed to plate 2 and is stationarily held in the path of the pawl for stopping the movement of the pawl and indicators at the same point in each operation.

In the last mentioned position, it will be noted that the follower pin 59 has completed the traverse of the inclined segment 54 of the cam and is engaged with the concentric dwell 5| where it will remain engaged until the beginning of another date changing operation.

It may be noted at this point that the full Actuator 62 1 stroke of the actuators at each operation is sufficient to move the month and the day-of-themonth indicators C and D to a maximum extent, i. e. to an extent required to change the indicated date from February 28th to March 1st and that though the primary actuator 51 is always moved to a maximum extent, the secondary actuator is moved only as far as may be necessary to operatively engage both the indicators C and D, the movement of the actuator 62 being effected in a clockwise direction, in the positions shown, by means of theten'sion spring 61 so that the pawl 63 will beset in a proper position relative to indicators C and D for effecting their movement. The clockwise movement of actuator 62 is stopped when pawl (33 drops into a notch 36. In the initial clockwise movement of the actuator 62, the pawl traverses the segments of both indicators until it is free to fall into one of the notches 36 of indicator C and in advance of the forward extremity of one of the segments on the month indicator D. If, in making a date change, as at the end of an expiring month, a skip of one or more days is made, the pawl will first seat in a notch 35 which is selected by reason of the peculiar arrangement of the segments, the initial return stroke under power of the cam may serve only to move the first day of the new month into registration with an aperture 29 on the month indicator adjacent the new month designation and thereafter will move both indicators C and D into indicating position on the dial I4.

For instance, Figs. 8 and 9 show the relative positions of the indicator segments for effecting a change of date from July 31st to August 1st. Fig. 8 shows the retracted position of the pawl 63 at the extremity of its movement in a clockwise direction, it having been stopped by engagement with the clockwise end of notch 36 when moved to such position from a normal or inactive position against stop 69. Hence, as shown in Fig. 9, an ensuing counter-clockwise movement of the actuator 62 and pawl 63 will move the indicators so as to register August 1st, this opera tion being only capable of producing a one day change from a thirty-one day month to the first day of a succeeding month or for a mid-month change.

As shown in Figs. 10 and 11, the indicators are shown, respectively, in positions just pr ceding and following a change from February 28th to March lst-a maximum change-the pawl E53 having been advanced to a position of engagement with the wide notch 36 on the indicator C between segments 34 and 35 which is the first available notch into which the pawl can seat, due to the fact that the preceding notches have been covered by segment 40 of the indicator D (see Fig. 10). Hence, on the initial power stroke of the pawl (counter-clockwise) the indicator C will first be moved untilthe pawl engages the trailing extremity 40a of segment 46 of the month indicator D, at which time the day of the month designation 1 will register with and be visible through the aperture opposite the month designation for March, and the continued movement of the pawl in the same direction will simultaneously move the indicators C and D into position in registration with the aperture 28 on the dial and the pawl will be stopped at this point by reason of its engagement with the stop 69.

In like manner, either two or three days may be skipped in making the change from one month to another inasmuch as the segments of indicators C and D are so formed and arranged and their extent is varied to accommodate the mechanism to such changes, the form and extent of certain of said segments being such that the first and proper available notch 36 will be engaged by pawl 53 so that the ensuing date change will be properly made.

The day-of-the-week indicator E may be operated by suitable means simultaneously with the other indicators, as shown in the drawings, or otherwise. As shown in Figs. 6, 7 and 16, said indicator E is adapted to be operated directly by the primary actuator 51 which has a spring held pawl It pivoted to an extremity of actuator 51 at a point H and tensioned as by means of a spring 12 so that the end of the pawl will engage teeth 13 formed internally on indicator E around and closely adjacent the sleeve [9. Thus, the teeth 13 form an internal gear which in fact, is typical of the indicators C and D also, for the purpose of manually setting the indicators to desired dates when desired or necessary, as hereinafter described in detail.

The number of teeth i3 is a suitable multiple of the number of days in a week (seven) and in this instance is shown as sixty-three. Sleeve 19 has an arcuate slot 14 therein which affords access to the pawl 70, as shown in Figs. 6 and '7, and said slot is of sufiicient length as to expose only nine teeth to engagement by the pawl 10 so that the indicator E will be moved exactly one-seventh of a revolution at each operation. Thus, when the actuator 51 is retracted in a clockwise direction preparatory to an ensuing date changing operation, the pawl Hi will move inwardly at the right hand end of slot 14 and slide over the inner surface of sleeve H! for a distance equal to the excess of movement occasioned by the maximum extent of movement of the secondary actuator and on a reverse movement in a counterclockwise direction, the pawl 19 will move over the sleeve l9 until it falls into the slot 14 and into engagement with the initial teeth '53 and will then continue to the end of the effective date changing stroke. Hence,

the indicator E will be moved at each operation which is adjacent slot 14 has its inner edge out back to avoid engagement with pawl Ill.

In order to retain the several indicators in successively adjusted positions and to prevent their unwarranted movement, I provide a series of detents engageable therewith which are preferably mounted on a base block 15 (Fig. 12) secured to the plate 2 as by means of screws or bolts 16. The detents, as at "H, 1B and 19, respectively engage the indicators C, D and E and are suitably spaced as by means of spacers to and 8|, the base 15, detents i7, i8 and E9 and the spacers 80 and 8! being commonly held by the screws or bolts 15, or otherwise. Said detent device is mounted within the opening of the sleeve 19 and the detents are preferably of spring metal and have extruded portions 82 at their extremities which engage depressions or apertures 83 formed in the inner portions of the indicators just outwardly of the sleeve i9, said detents extending radially through the opening 25 in said sleeve, as shown in Fig. 6.

Indicators C and D also have the internal gear teeth 13 of like pitch and size as compared with those on indicator E, and all of said indicators are adapted to be commonly engaged by a manually operable pinion 84 fixed to a shaft 85 which is rotatably held on plates l and 2 and carries a knob 86 rearwardly of plate I in a convenient position for manual operation. Shaft 85 has three annular grooves 81 spaced correspondingly thereon to the indicators C, D and E and engageable by a spring detent 88 fixed to plate 2, as shown in Fig. 12 so that the shaft may be moved inwardly and outwardly for the purpose of meshing the pinion 84 with the gears 13 of the indicators, whereby the indicators may be individually set to a given date, as when the clock is installed for use or when the same may for any reason have been stopped. Pinion 84 is normally held engaged with the teeth 13 on the innermost indicator C, though such is not actually necessary,

A principal feature of my improved calendar clock mechanism is in the provision of the self regulating variable stroke pawl 63, the positive stroke of which serves to advance the indicator discs to established points of registration with the aperture 28 on the dial I4 and such stroke of said pawl is limited by travel of the cam follower 55, the relation of the peripheral teeth on indicators C and D and the fixed stop 69 which is secured to plate 2 and is engaged by said pawl.

The reverse stroke of the pawl is effected by a spring of light tension whereby the pawl is moved over the peripheries of the discs until it can engage a radial shoulder on the month disc or a radial notch on the day-of-the-month disc. The pawl then rests at such point or points of engagement until the cam and associated mechanism effects its return on a positive stroke under the influence of the cam to its normal position in engagement with stop 69, thus effecting a requisite date change.

The segments on indicators C and D correspond in position and are influenced as to their length or extent by the month and day of the month designations, respectively. Said segments are of various lengths, depending upon the number of days in the corresponding months, the segment 40 on indicator D for February being the longest, those for thirty day months somewhat shorter, and those for thirty-one day months the shortest.

The stroke of pawl 63 is normally limited or determined on its clockwise stroke by the engagement of the pawl with the leading shoulder on the segment of the day of the month indicator which corresponds to the ensuing day of the month, it being led to such point by the segment on the day-of-the-month indicator corresponding to the preceding day. This action occurs as many times in a month as there are days in the month less one.

For example, when July is the current month to be indicated at the dial aperture, such being a thirty-one day month, the July segment 43 on the month indicator is positioned with its leading extremity 4312, Figs. 3 and 8 about fourteen degrees clockwise from stop 69 which registers all of the indicators with each other and with the dial aperture and also limits the positive stroke of the pawl 63. As daily changes are made, the pawl travels about nine and one-half degrees over the day-of-the-month segments and then drops into the notch 35 between the trailing shoulder of that segment and the leading shoulder of the next day segment. This action is typical forthe first twenty-seven days of a month but for the twenty-eighth and twenty-ninth days of the month, the pawl traverses the corresponding segments for those days to an extent of about eleven degrees and then drops into a notch 36 preparatory to an ensuing stroke of the pawl. For the thirtieth of the month, the pawl follows the corresponding segment for that day to an extent of about twelve and one-half degrees before dropping into a notch 36. In this'description where I speak of a segment, for example, the segment for the thirtieth of the month I refer to that raised segment, (segment 32) the trailing step of which is engaged and advanced by pawl 63 to register 30 the corresponding day. For the thirty-first of a month, the pawl travels about fourteen degrees before coming opposite a notch 36, but, at the end of'mbnths having 30 days such as June, due to the fact that the leading shoulder of the July segment 43 of indicator D was positioned fourteen degrees clockwise from the stop 69, the notch 36 between segments 33 and 34 of indicator C has been closed and the pawl continues its stroke following the July segment until it finds and drops into notch 36 and is stopped either by the leading shoulder of the August segment 38 or the leading shoulder of the 2 segment 35 on the indicator C. As a result the next subsequent date-changing operation carries date indication 31 past opening 28 and then produces the indication July 1. Other date changing operations are effected in a similar manner as herein described, in accordance with the'particular requirements for each month.

It will be noted that in all month end changes, the combined segments traversed by the pawl cause the pawl to be moved over the number of days in a month less than thirty-one which the particular month may contain and, therefore, always registers the day of the month designation 1 after such changes.

Stop 69 has a cam edge 90 which is flush with the lowermost edges of all of the segments on indicators C and D and thus serves to raise the pawl 63 out of the notch 36 in which it was last engaged, so that the indicator C may be released automatically at the completion of each operation so as to permit the resetting of the indicators through the medium of the manually operable pinion 84, indicators D and El being free to rotate in a setting operation in the same direction.

From the foregoing description of my improvements, it will be observed that the discs C, D and E are practically forms of ratchet wheels engageable by the pawls 63 and 1D for effecting their intermittent operation at the close of each day, regardless of the month, week, day of the month or. year, except in the case of leap years.

' What I claim is:

1. A calendar clock comprising: a timing mechanism, a dial, superposed indicators operatively connected with said timing mechanism and relatively movable for, respectively, indicating days of the week, days of the month and months of a year and provided with an annularly arranged series of cam segments formed and spaced to correspond, respectively, with the date designations thereon, and automatic operating means actuated by said timing mechanism including a variable stroke reciprocating actuator engageable with selected segments of said indicators once in each twenty-four hours for moving selected indicators to a requisite extent for changing the indicated date, certain segments of said month and said day-of-the-month indica tors being of different extent than the remaining segments and adapted to overlap when changing from one month to a succeeding month so as to vary the effectiveness of said actuating means relative to the number of days in the expiring month.

2. A calendar clock comprising: a timing mechanism, a dial, superposed indicators operatively connected with said timing mechanism and relatively movable for, respectively, indicating days of the week, days of the month and months of a year and provided with a single set of such date indication and with an annularly arranged series of cam segments formed and spaced to correspond, respectively, with the date designations thereon, and automatic operating means actuated by said timing mechanism and engageable with selected segments of said indicators once in each twenty-four hours for moving selected indicators to a requisite extent for changing the indicated date, said actuating means being effective when changing from one month to another for initially moving the requisite month and day of the month designations into registration and in its final phase for simultaneously moving said month and day-of-themonth indicators into registration with a predetermined position on said dial for indicating the changed date.

3. A calendar clock comprising: a timing mechanism, a dial having a single, date exposure, opening, superposed indicators operatively connected with said timing mechanism and relatively movable for, respectively, indicating days of the week, days of the month and months of a year in said opening and provided with an annularly arranged series of cam segments formed and spaced to correspond, respectively, with the date designations thereon, and automatic operating means actuated by said timing mechanism and engageable with selected segments of said indicators once in each twentyfour hours for moving selected indicators to a requisite extent for changing the indicated date, a frame for supporting said timing mechanism and said calendar elements, and manual setting means on said frame adjustable to selectively engage with each of said indicators for individually setting the indicators to indicate a desired date.

4. A calendar clock comprising: a timing mechanism, a dial, superposed indicators operatively connected with said timing mechanism and relatively movable for, respectively, indicating days of the week, days of the month and months of a year and provided with an annularly arranged series of cam segments formed and spaced to correspond, respectively, with the date designations thereon, and automatic operating means actuated by said timing mechanism and engageable with selected segments of said indicators once in each twenty four hours for moving selected indicators to a requisite extent for changing the indicated date, said operating means including a cam, an actuator directly controlled by said cam and engageable with and for moving said day-of-the-week indicator, and a second actuator at times engageable with and for operation by said first actuator to a variable extent, and effective for moving said month and said day-of-the-month indicators.

5. A calendar clock comprising: a timing mechanism, a dial, superposed indicators operatively connected with said timing mechanism and relatively movable for, respectively, indicating days of the week, days of the month and months of a year and provided with an annularly arranged series of cam segments formed and spaced to correspond, respectively, with the date designations thereon, and automatic operating means actuated by said timing mechanism and engageable with selected segments of said indicators once in each twenty-four hours for moving selected indicators to a requisite extent for changing the indicated date, said operating means including a cam, an actuator directly controlled by said cam engageable with and for moving said day-of-the-week indicator, and a second actuator at times engageable with and for operation by said first actuator to a variable extent and effective for moving said month and said day-ofthe-month indicators, yieldable means controlled by said cam for moving said actuators into positions for ensuing changes of said indicators, and a fixed stop device for limiting the movement of said actuator and said indicators at the completion of each operation.

6. A calendar clock comprising: a timing mechanism, a dial, superposed indicators operatively connected with said timing mechanism and relatively movable for, respectively, indicating days of the week, days of the month and months of a year and provided with an annularly arranged series of cam segments formed and spaced to correspond, respectively, with the date designations thereon, and automatic operating means actuated by said timing mechanism and engageable with selected segments of said indicators once in each twenty-four hours for moving selected indicators to a requisite extent for changing the indicated date, said month indicator having alternate correspondingly inclined segments and recesses of different length corresponding to the number of days in different months providing radial shoulders at both extremities of the segments, said day-of-the-month indicator having alternate correspondingly inclined segments and radial notches formed and spaced to correspond to the difference in the number of days in the months of a year, said operating mechanism including a variable stroke reciprocating actuator having an element adapted to selectively traverse certain of the segments of the month and day of the month indicators preparatory to a date changing operation and to engage a requisite notch in the day-of-the-month indicator and a requisite segment shoulder on the month indicator for moving both of said indicators to an extent sufficient to indicate the date change on said dial.

'7. A calendar clock comprising: mechanism, a dial, superposed indicators operatively connected with said timing mechanism and relatively movable for, respectively, indicating days of the weekfdays of the month and months of a year and provided with an annularly arranged series of cam segments formed and spaced to correspond, respectively, with the date designations thereon, and automatic operating means actuated by said timing mechanism and engageable with selected segments of said indi cators once in each twenty-four hours for moving selected indicators to a requisite extent for changing the indicated date, said month indicator having alternate correspondingly inclined segments and recesses of different length corresponding to the number of days in different months providing radial shoulders at both extremities of the segments, said day-of-the-month indicator having alternate correspondingly inclined segments and radial notches formed and a timing spaced to correspond to the difference in the number of days in the months of a year, said operating mechanism including a variable stroke reciprocating actuator having an element adapted to selectively traverse certain of the seg-' ments of the indicators preparatory to a date changing operation and to engage a requisite notch in the day-of-the-month indicator and a requisite segment shoulder on the month indicator for moving both of said indicators to an extent sufficient to indicate the date change on said dial and a uniform stroke reciprocating actuator for moving said day-of-the-week indicator simultaneously with said other indicators.

8. A calendar clock comprising: a timing mechanism, a dial, superposed day of the week, day of the month and month of the year indicators having a single set of corresponding date indications thereon operatively connected with said timing mechanism and relatively movable for, respectively, indicating days of the week, days of the month and months of a year and provided with an annularly arranged series of cam segments formed and spaced to correspond, respectively, with the date designations thereon, and automatic operating means actuated by said timing mechanism and engageable with selected segments of said indicators once in each twentyfour hours for moving selected indicators to a requisite extent for changing the indicated date, said month and day-of-the-month indicators at least having alternating segments and recesses corresponding in number, respectively, to the number of months in a year and the maximum number of days in a month, certain of the segments on each indicator being of different lengths as determined by the diiference in the number of days in certain months, said operating means including a variable stroke reciprocating actuator having an element adapted, on one stroke, to traverse and engage the extremities of selected segments on the month and day of the month indicators for moving said indicators on the reverse stroke of the actuator to date indicating position.

9. A calendar clock comprising: a timing mechanism, a dial having a single, date exhibiting, opening, superimposed day of the week, day of the month and month of the year indicators having a single set of corresponding date indications thereon operatively connected with said timing mechanism and relatively movable for, respectively, indicating days of the week, days of the month and months of a year in said opening and provided with an annularly arranged series of cam segments formed and spaced to correspond, respectively with the date designations thereon, and automatic operating means actuated by said timing mechanism and engageable with selected segments of said indicators once in each twenty-four hours for moving selected indicators to a requisite extent for changing the indicated date, said month and day-of-the-month indicators at least having alternate segments and recesses corresponding in number, respectively, to the number of months in a year and the maximum number of days in a month, certain of the segments on each indicator being of different lengths as determined by the difference in the number of days in certain months, said operating means including a reciprocating actuator having an element adapted, on one stroke, to traverse and engage the extremities of selected segments for moving the indicators on the reverse stroke of the actuator to date indicating position, the relative positions of the segments on the month indicator relative to those on the day-of-the-month indicator serving to control the selection by said actuator of requisite points of engagement with both of said indicators so as to properly move said indicators to indicating positions on said dial.

10. A calendar clock comprising: a timing mechanism, a dial, a single, date exposing, opening in said dial superposed indicators operativeiy connected with said timing mechanism and relatively movable for, respectively, indicating days of the week, days or the month and months of a year in said opening and provided with an annularly arranged series of cam segments formed and spaced to correspond, respectively, with the date designations thereon, and automatic operating means actuated by said timing mechanism and engageable with selected segments of said indicators once in each twenty-four hours for moving selected indicators to a requisite extent for changing the indicated date, said month and day-of-the-month indicators at least having alternate segments and recesses corresponding in number, respectively, to the number of months in a year and the maximum number of days in a month, certain of the segments on the month and day of the month indicators being of difierent lengths as determined by the difference in the number of days in certain months, said operating means including a constant stroke reciprocating pawl and a variable stroke reciprocating pawl each having elements adapted, on one stroke, to traverse and engage the extremities of selected segments for moving the indicators on the reverse stroke to date indicating position, a supporting frame, a manually shiftable setting member, and means on said indicators selectively engaged by said setting member for individually operating said indicators so as to indicate a desired date,

11. A calendar clock comprising: a timing mechanism, a dial, superposed indicators operatively connected with said timing mechanism and relatively movable for, respectively, indicating days of the week, days of the month and months of a year and provided with an annularly arranged series of cam segments formed and spaced to correspond, respectively, with the date designations thereon, and automatic operating means actuated by said timing mechanism and engageable with selected segments of said indicators once in each twenty-four hours for moving selected indicators to a requisite extent for changing the indicated date, said month and s..-

day-of-the-month indicators at least having alternate segments and recesses corresponding in number, respectively, to the number of months in a year and the maximum number of days in a month, certain of the segments on the month :1

and day of the month indicators being of different lengths as determined by the difference in the number of days in certain months, said operating means including a reciprocating actuator having elements adapted, on one stroke, to traverse and engage the extremities of selected segments for moving the indicators on the reverse stroke of the actuator to date indicating position, said operating means including a cam and dual actuating means for independently op erating said month and daywf-the-month indicators through the medium of one element and of the day-of-the-week indicator through the medium of another element under the control of said cam.

12. A calendar clock comprising: a timing mechanism, a dial, superposed indicators operatively connected with said timing mechanism and relatively movable for, respectively, indicating days of the Week, days of the month and months of a year and provided with an annularly arranged series of cam segments formed and spaced to correspond, respectively, with the date designations thereon, and automatic reciprocating operating means actuated by said timing mechanism and engageable with selected segments of said indicators once in each twentyfour hours for moving selected indicators to a requisite extent for changing the indicated date, said month and day-of-the-month indicators at least having alternate segments and recesses corresponding in number, respectively, to the number of months in a year and the maximum number of days in a month, certain of the segments on the month and day of the month indicators being of different lengths as determined by the difference in the number of days in certain months, said operating means including a variable stroke pawl for operating said month and day of the month indicators and a uniform stroke pawl for operating the day of the week indicator under the control of said cam.

13. In an automatic calendar, washer shaped day of the week, day of the month and month of the year indicator disks having corresponding date indications thereon mounted side by side for rotation about a common axis, the day of the Week indicator having internal peripheral teeth of uniform spacing and the other indicators having external peripheral cam segments varying in length but corresponding in number to the number of the date indications thereon, a pawl engageable with said teeth for advancing the day of the week indicator, a second pawl engaging said cam segments for advancing the other two indicators, both pawls being pivoted for rotation about said common axis, means for reciprocating the day of the week pawl through a uniform stroke once in twenty-four hours, extensions on said pawls whereby the second pawl is advanced with the day of the week pawl, and a spring for retracting the second pawl, said cam segments limiting the retracting movement of the second pawl whereby its advancing operation varies and is less than the advance of the day of the week pawl.

14. In an automatic calendar, disk shaped day of the month and month of the year indicators carrying corresponding date indications thereon mounted for rotation about a common axis, said indicators being of substantially the same external diameter and having alternate cam segments and depressions in their peripheries correspending in number to the date indications on the respective indicators, a lever pivoted on the same axis with said indicators and carrying a pawl, means for resiliently biasing said pawl to cause it to engage and cooperate with the cam surfaces of said indicators, automatic time controlled means for advancing said pawl to effect date changing operations, a stop for stopping the advance of said pawl, a spring for retracting said pawl, the extent of retraction of said pawl from the stop being varied and limited by its engagement with the leading edges of segments in the peripheries of said indicator the segments and depressions in said indicators varying in length and overlapping in such a way that the retraction and advance of said pawl will vary as required to produce correct date changing operations and said stop being so shaped as to lift the pawl sufiiciently in its stopped position that the indicators may be advanced independently of the pawl for date setting purposes.

15. An automatic calendar comprising a casing having a single date observation window in its front, disk shaped day of the week, day of the month and month of the year indicators having single sets of corresponding date indications thereon, said indicators being mounted side by side for rotation about a common axis in said casing past said window and having their indications evenly spaced in concentric circles on the front sides thereof, openings in the front two indicators whereby by relative rotation of the indicators, any desired date-indicating combination may be brought into visual alignment in said window, the inner peripheries of said indicators being cut to form similar internal gears, the day of the month and the month of the year indicators being of substantially the same outer diameter and having alternate segments and recesses cut in their outer peripheries corresponding in number to the number of the date indications on the corresponding indicators, a pair of levers pivoted on the axis of said indicators, a pawl pivoted to one lever and cooperating with the inner gear of the day of the Week indicator for advancing the same one-seventh revolution every twenty-four hours to indicate the days of the week in said window, a pawl pivoted to the other lever cooperating with the recesses and segments of the day of the month and month of the year indicators for advancing said indicators to indicate the days of the month and the months of the year in said window, time controlled means for reciprocating said levers through different angles, and a shaft extending from said casing having a gear thereon shiftable into mesh with any one of said internal gears for manually setting the calendar.

ARTHUR P. NEYHAR'I'. 

